2l8 



Wyoming Experiment Station. 



Pyrola 148 



Pyrus 105 



Quercus 1 78 



Ramularia 203 



Ranunculus 7^ 



Rhus 91 



Ribes 108 



Rinodina 203 



Rosa 105 



Rubus loi 



Rudbeckia 133 



Rumex 175 



Sagittaria 186 



Salicornia 172 



Salix 178 



Salsola 172 



Salvia 166 



Sambucus 118 



Sanicula 115 



Saponaria 86 



Sarcobatus 172 



Saxifraga 106 



Schedonardus 193 



Scirpus 186 



Scrophularia .■ 160 



Scutellaria 167 



Sedum no 



Selaginella 200 



Selinum 117 



Senecio 140 



Setaria 190 



Shepherdia 176 



Sibbaldia 104 



Sidalcea 89 



Silene 86 



Sisymbrium 182 



Sium. 116 



Smelowskia 83 



Smilacina 182 



Solanum 160 



Solidago 124 



Sonchus 156 



Spartina 103 



Specularia 147 



Sphseralcea 90 



Spirsea 1 00 



Spiranthes 181 



Sporobolus 191 



Stachys 167 



Stanleya 83 



Steironema 150 



Stellaria 87 



Steplianomeria 146 



Stipa 190 



Streptopus. 182 



Sueda 1 72 



Swertia 152 



Symphoricarpos 118 



Synthyris 163 



Tanacetum 137 



Taraxacum 145 



Tellima 107 



Tetradymia 142 



Thalictrum 75 



Thelesperma 134 



Thelypodium 81, 204 



Thermopsis 92 



Thlaspi 84 



Timmia 201 



Tissa 88 



Townsendia 125 



Tradescantia 184 



Trifolium 94 



Triglochin- 186 



Trisetum 192 



Trollius 78 



Troximon 145 



Typha 1 85 



Uromyces 203 



Urtica 177 



Vaccinum 147 



Valeriana. 1 19 



Verbena 166 



Veronica 163 



Viburnum 1 18 



Vicia 99 



Viola 85 



Vitis 91 



Woodsia 200 



Wyethia 133 



Vucca 182 



Zizia 116 



Zygadenus, 184 



